820429633382 has 4 divisors (see below), whose sum is σ = 1230644450076. Its totient is φ = 410214816690.

The previous prime is 820429633351. The next prime is 820429633391. The reversal of 820429633382 is 283336924028.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 820429633382.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205107408344 + ... + 205107408347.

It is an arithmetic number, because the mean of its divisors is an integer number (307661112519).

Almost surely, 2^820429633382 is an apocalyptic number.

820429633382 is a deficient number, since it is larger than the sum of its proper divisors (410214816694).

820429633382 is a wasteful number, since it uses less digits than its factorization.

820429633382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410214816693.

The product of its (nonzero) digits is 2985984, while the sum is 50.

The spelling of 820429633382 in words is "eight hundred twenty billion, four hundred twenty-nine million, six hundred thirty-three thousand, three hundred eighty-two".